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rp2/memmap_mp.ld: Lower the minimum GC heap to 32K.

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Reduce mimimum heap requirement.  This value allows more room for large,
static buffers in user C modules (such as graphics buffers or otherwise)
which might be allocated outside of MicroPython's heap to guarantee
alignment or avoid fragmentation.

Signed-off-by: Phil Howard <phil@gadgetoid.com>
This commit is contained in:
Phil Howard 2024-07-04 10:19:26 +01:00 committed by Damien George
parent 1557014ea4
commit e7ff0b8a31
1 changed files with 7 additions and 3 deletions
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ports/rp2/memmap_mp.ld
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@ -256,9 +256,13 @@ SECTIONS
__StackBottom = __StackTop - SIZEOF(.stack_dummy); __StackBottom = __StackTop - SIZEOF(.stack_dummy);
PROVIDE(__stack = __StackTop); PROVIDE(__stack = __StackTop);
/* Check GC heap is at least 128 KB */ /* Check GC heap is at least 32 KB */
/* On a RP2040 using all SRAM this should always be the case. */ /* This is quarter the minimum RAM suggested for full-featured MicroPython.
ASSERT((__GcHeapEnd - __GcHeapStart) > 128*1024, "GcHeap is too small") * This value accounts for large static buffers included in user C or C++
* modules, which might significantly reduce the available heap but also
* lower demand for memory at runtime.
*/
ASSERT((__GcHeapEnd - __GcHeapStart) > 32*1024, "GcHeap is too small")
ASSERT( __binary_info_header_end - __logical_binary_start <= 256, "Binary info must be in first 256 bytes of the binary") ASSERT( __binary_info_header_end - __logical_binary_start <= 256, "Binary info must be in first 256 bytes of the binary")
/* todo assert on extra code */ /* todo assert on extra code */